ultrasonic testing
Non Destructive Testing Visual Inspection Visual inspection is the one NDT method used extensively to evaluate the condition or the quality of a weld or component. It is easily carried out, inexpensive and Visual inspection is the one NDT method used extensively to evaluate the condition or the quality of a weld or component. It is easily carried out, inexpensive and usually doesn't require special equipment. Radiography X-rays are produced by high voltage x ray machines whereas gamma rays are produced from radioactive isotopes such as Iridium 192 The x-ray or gamma rays are placed close to the material to bc inspected and they pass through the material and are then captured on film This film is then processed and the image is obtained as a series of gray shades between black and white. Magnetic Particle Inspection Magnetic particle inspection is a method that can be used to find surface and near surface flaws in ferromagnetic materials such as steel and iron. The technique uses the principle that magnetic lines of force {flux) will be distorted by the presence of a flaw in a manner that will reveal it's presence. the flaw (for example, a crack) is located from the "flux leakage", following the application of fine iron particles, to the area under examination. There are variations in the way the magnetic field is applied. but they are all dependant on the above principle . Penetrant Testing Inspection Liquid penetration inspection is a method that is used to reveal surface breaking flaws by bleed out of a colored or fluorescent dye from the flaw. Ultrasonic Testing Ultrasonic inspection uses sound waves of short wavelength and high frequency to detect flaws or measure material thickness. It is used on aircraft, the power stations generating plant, or welds in pressure vessels at an oil refinery or paper mill. . Non Destructive Testing Visual Inspection Visual inspection is the one NDT method. applied. but they are all dependant on the above principle . Penetrant Testing Inspection Liquid penetration inspection is a method that is used to